Our heavy investments in Prime, AWS, Kindle, digital media, and customer experience in general strike some as too generous, shareholder indifferent, or even at odds with being a for-profit company. “Amazon, as far as I can tell, is a charitable organization being run by elements of the investment community for the benefit of consumers,” writes one outside observer.

But I don’t think so.

To me, trying to dole out improvements in a just-in-time fashion would be too clever by half. It would be risky in a world as fast-moving as the one we all live in.

More fundamentally, I think long-term thinking squares the circle. Proactively delighting customers earns trust, which earns more business from those customers, even in new business arenas. Take a long-term view, and the interests of customers and shareholders align.

Bezos is the ultimate disrupter: He has upended the book industry and displaced electronics merchants. Now Amazon is pushing into everything from couture retailing and feature-film production to iPad-worthy tablet manufacturing. Amazon even sells ultracheap database software for businesses. (Oracle (ORCL), take note.) He’s willing to take risks and lose money, yet investors have embraced him, pushing Amazon’s stock up 30% so far this year. And even as Amazon expands and experiments, Bezos remains zealous about delivering a good customer experience. For all these reasons and more, Fortune has named Bezos its 2012 Businessperson of the Year.